Inner tube for pneumatic tires



Feb. 3, 1931.

W. A. KLINEV INNER TUBE FOR PNEUMATIC TIRES OriginalFiled Nov. 5; 1929 ATTORNEY l in large measure to Patented Feb.' 3, 19.31 y

UNITED STATES.

WALTER A. KLINE, 0I MIDDLETOWN,

CORPORATION, OF AKAI'KON,

ILLINOIS, Assrenon To THE A-n.

omo, A conronerron'or omo PRODUCTS INNER TUBE ron rNEUMA'rIc 'rms Original application iiled My present invention relates to the art of pneumatic ti es and it particularly has reference to the inner tubes of such tires.

Recently drop center rims have come largely due to low inflation pressures or'when punctures occur, the inner tubes are frequently chewed up before the driver becomes aware that he has a hat tire. rl`his is due the pinching of the inner tube between the beads of the shoe 'or between the beads and the rim. When tires lon drop center rims become under-inated they have a decided tendency to creep around the rim and also laterally, thereby frequently injuring the inner tube as well as causing the heating of the tire. 0

My invention, therefore, has for its objects to rovide an inner tu e which will, after in ation, attach itself to the rim an to the beads'of the tire shoes in such a manner as to connect beads to rim by elastic joints which, however, will be of sutlicient tenacity to prevent creeping of the shoe on the rim and in event of sudden deflation will tend to hold the beads of the shoe against after the tube has the rim flanges and keep them from work` in into the rim Vwellto the injury of the tu Other objects will in part be obvious and in part be pointed out hereinafter.

To the attainment of the afdresaid objects and ends, my invention consists in the novel features of construction and in thecombination, connection and arrangement of parts, hereinafter more fully described, and then pointed out in the appended claims.

In the drawings:

Figure lis a cross section of'a drop center rim with tire and tubeapplied and in- Hated. f

Figure 2 is a view similarto Figure 1 been deflated.

Figure 3 is a detail perspective view of a portion of an inner tube -with my invention applied thereto.

. Figu ication hereinafter referred to.

In carrying out my invention I provide the tube, 7 which hasalong its inner pcf November', 1929, Serial No. and this application led July 28,

into use and it has been found that,-

d the beads separated laterally lworking over into the well of the rim.

re 4 is a detail cross section of a modil405,028, and in canada January 11, 1930. Divided 1930. Serial No. 471,238.

riphery, one or more rows of suction or vacuum cups 8 to engage the rim stri is cemented within the bottom ci, the rim well 3. rEhe strip 4 is provided to cover the sipoke ends and any irre larit caused by t e attachment of the spo es to t e rim. he tube 7 also has a row of suction cups -9 at each side of the central set 8 for the purpose of engaging the side walls of the well 3 of the rim, a third set of vacuum cups 10 being provided to engage the beads 6 of the shoe 5, which beads rest on narrow bead seats 2 of the rim and lie against the flanges thereof.

As will be notice by reference toFiures l and 2, after the tube has once been in ated andthe suction cups 8, 9 and 10 have taken hold, the beads 6 of the-shoe will be ltied to the rim by dexible elastic connectionsthat will have suilcient tenacity, however to hold (i. e., hold them prevent their In this way the cutting of the tube by pinching it between the shoe beads or between the beads and the rim which is now so common with ordinary inner tubes, is avoided and the vdriver will have ample time to draw out of the traffic lane and stop his car before the vacuum cups let glo.

Byproviding t e tube with the means for connecting the beads and rim together, should a sudden drop in pressure occur within the tube (as might becaused by a blow-out or a large gash cut) such drop in pressure will simply cause the suction cups to hold tighter and thus give the driver ample time to get out of the traiiic stream to the side of the road where iently or repair the damage one.

Even ,should the beads of a deflated tire work toward one another somewhat, as might occur `if considerable side thrust is placed on against the flanges 1) and Athe tire, there wi l be little danger of damagingther rim face of the innerrtube since the tube will stretch and accommodateitself to such movement of the beads and when the thrust is 'relieved will tend to restore the beads to their normal positions on the rim.

Furthermore, it will be obvious that by connecting the beads to the .rim through the 4 which he can chan e tires conven y patented September 2, 1930,

bead seats,

medium of elastic exible strips as it were, the likelihood of the shoe creeping around the rim as it sometimes does with the tubes nov7 generally used) When partially deated is reduced to a minimum.

While my tube is especially adapted to use with drop center rims,l it may ,also be employed with the ordinary dat type rim, in which event the vacuum cups would be arranged in three groups, the center group 86a engaging the rim and the tvvo side groups 9a engaging the beads of the shoe 5, Figure h his application is a division of my application, Ser. No. 405,028, led Nov. 5, 1929,

From the foregoing description, taken in connection with the accompanying drawings, it is thought the construction, uses and advantages of my invention will be clear to y those skilled in the art to which it relates.

What I claim is:

1. In combination with shoe thereon having beads, said rim having bead seats, of an inner tube having that portion which engages the beads and rim' of approximately uniformv thickness in cross section and provided With means to secure said beads in place on said rim.

2. ln combination with a rim and a tire shoe thereon having beads, said rim having bead seats, of an inner tube. and means to cause an adhesion of the inner tube to the beads and rim for the purpose described.

3. In combination With a rim and a tire shoe thereon having beads, said rim having of an inner tube, said inner tube having suction cups arranged to engage With said bea-dsl and with said rim.

4. ln combination with a drop center rim and a tire shoe thereon having beads, said Well, of an inner having suction cups to engage said beads and having other suction cups to engage the rim within the Well thereof.

WALTER A.. MAINE.

a rim and a tire 

